IAD - SXM

$240 Find Cheap Flights from Washington Dulles Airport to Simpson Bay

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Simpson Bay departing on 4/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Simpson Bay

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Simpson Bay, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Simpson Bay, as well as popular online travel agencies
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Cheap Flight Deals from Dulles Intl to Simpson Bay (IAD-SXM)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Simpson Bay that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Dulles Intl to Simpson Bay

KAYAK's recommended round-trip deals from the most popular airlines that fly from Dulles Intl to Simpson Bay.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Frontier Logo
12:23 pm - 5:06 pmIAD-SXM
28h 43m1 stop
Frontier Logo
12:36 pm - 8:58 amSXM-IAD
20h 22m1 stop
$394Frontier
Find Deal
Sun, Jun 22 - Sat, Jun 28
Frontier Logo
12:23 pm - 5:06 pmIAD-SXM
28h 43m1 stop
Frontier Logo
12:36 pm - 8:56 amSXM-IAD
20h 20m1 stop
$398Frontier
Find Deal
Sun, Jul 6 - Sat, Jul 12
United Airlines Logo
8:17 am - 12:29 pmIAD-SXM
4h 12mnonstop
United Airlines Logo
3:55 pm - 8:20 pmSXM-IAD
4h 25mnonstop
$533United Airlines
Find Deal
Wed, May 7 - Wed, May 14
Copa Airlines Logo
2:21 am - 11:23 amIAD-SXM
9h 02m1 stop
Copa Airlines Logo
12:21 pm - 4:20 amSXM-IAD
15h 59m1 stop
$535Copa Airlines
Find Deal
Tue, May 6 - Wed, May 14
Delta Logo
6:00 am - 1:54 pmIAD-SXM
7h 54m1 stop
Delta Logo
3:19 pm - 12:28 amSXM-IAD
9h 09m1 stop
$547Delta
Find Deal
Wed, May 7 - Fri, May 16
American Airlines Logo
1:19 pm - 1:35 pmIAD-SXM
24h 16m2 stops
American Airlines Logo
4:05 pm - 8:33 amSXM-IAD
16h 28m2 stops
$552American Airlines
Find Deal
Sat, Jul 5 - Wed, Jul 16
American Airlines Logo
1:19 pm - 1:25 pmIAD-SXM
24h 06m1 stop
American Airlines Logo
2:15 pm - 11:58 pmSXM-IAD
9h 43m1 stop
$555American Airlines
Find Deal
Sat, Jul 5 - Wed, Jul 16
Copa Airlines Logo
2:21 am - 11:23 amIAD-SXM
9h 02m1 stop
Copa Airlines Logo
12:21 pm - 12:29 amSXM-IAD
12h 08m1 stop
$560Copa Airlines
Find Deal
Tue, May 13 - Sun, May 18
Delta Logo
7:05 am - 1:54 pmIAD-SXM
6h 49m1 stop
Delta Logo
3:19 pm - 11:35 pmSXM-IAD
8h 16m1 stop
$572Delta
Find Deal
Fri, May 9 - Tue, May 13
United Airlines Logo
8:17 am - 12:29 pmIAD-SXM
4h 12mnonstop
United Airlines Logo
3:55 pm - 8:20 pmSXM-IAD
4h 25mnonstop
$658United Airlines
Find Deal
Sat, Jul 5 - Wed, Jul 16

KAYAK's insights & trends for Dulles Intl to Simpson Bay flights

Get data-powered insights and trends into flights from Dulles Intl to Simpson Bay to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Simpson Bay?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Simpson Bay clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Washington Dulles Airport to Simpson Bay, look for departures on Wednesdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Simpson Bay, Monday is the cheapest day to fly and Saturday is the most expensive.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Simpson Bay?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Simpson Bay, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Simpson Bay is September, where tickets cost $582 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $934 and $910 respectively.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Simpson Bay?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Simpson Bay, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Simpson Bay, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low season

September

High season

June

Cheapest flight

$240
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Washington Dulles Airport to Simpson Bay

When to book flights from Dulles Intl to Simpson Bay

Are your dates flexible? Find out the best times to travel from Dulles Intl to Simpson Bay based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Simpson Bay flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Simpson Bay?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Simpson Bay was $240 for a one-way ticket and $394 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Simpson Bay?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington Dulles Airport and on arrival in Simpson Bay.

  • Which airports will I be using when flying from Washington Dulles Airport to Simpson Bay?

    When flying out of Washington Dulles Airport you will be using Washington, D.C. Dulles Intl. You will be landing at Simpson Bay, also known as Simpson Bay Princess Juliana.

  • Which airlines offer Wi-Fi service onboard planes from Washington Dulles Airport to Simpson Bay?

    JetBlue, American Airlines, and Delta offer inflight Wi-Fi service on the Washington Dulles Airport to Simpson Bay flight route.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Simpson Bay?

    The Boeing 737-700 is the aircraft model that flies most regularly on the Washington Dulles Airport to Simpson Bay flight route.

  • Which airline alliances offer flights from Washington Dulles Airport to Simpson Bay?

    Star Alliance is the only airline alliance operating flights between Washington Dulles Airport and Simpson Bay.

  • On which days can I fly direct from Washington Dulles Airport to Simpson Bay?

    You can catch a nonstop flight from Washington Dulles Airport to Simpson Bay on Wednesday, and Saturday.

  • Which is the best airline for flights from Washington, D.C. to Simpson Bay, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Simpson Bay are Delta and United Airlines. With an average price for the route of $644 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $754 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Simpson Bay?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Simpson Bay.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Simpson Bay?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Simpson Bay from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Simpson Bay?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Simpson Bay with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and SXM can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Simpson Bay?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Simpson Bay from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to Simpson Bay

  • Looking for a cheap flight? 25% of our users found flights on this route for $318 or less one-way and $637 or less round-trip.

Prefer to fly direct from Washington Dulles Airport to Simpson Bay?

Find which airlines fly direct from Washington, D.C. Dulles Intl Airport to Simpson Bay Princess Juliana Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. Dulles Intl to Simpson Bay Princess Juliana

Wednesday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Simpson Bay Princess Juliana to Washington, D.C. Dulles Intl

Wednesday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights
See more direct flights

Top 3 airlines serving from Dulles Intl to Simpson Bay

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Simpson Bay. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Simpson Bay? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7898 reviews
7.9Comfort
8.5Crew
8.2Boarding
7.9Entertainment
7.3Food
Airline reviews

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

10.0 ExcellentSunderesh, Mar 2025AUS - BOS
Read more Delta reviews

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

After a 5 hour delay waiting at the gate (3 delays adding up) with no clear reason provided, we finally boarded flew 3/4 of the way to Toronto then were turned back to New York. As we neared New York, the pilot declared that it was his fault, something to do with timing and him not being allowed into the country???? How could the airline let his happen? They had hours to prepare and make sure they had a crew available for the flight! We ended up in Toronto a day late with no sleep.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

Terrible and im avoiding them in the future. My initial flight was delayed causing me to rebook my flight and when speaking with the representative to rebook I explained this is the second time my flights were delayed and they did nothing to help me. I wasn't booked to comfort plus or given a voucher or anything. I was almost late for my meeting that I needed to attend on Monday because of the games delta played delaying my flights even more and putting me in the very back of the plane next to an extremely intoxicated passenger

Friendly flight attendants, smooth 8-9 hours flight. Economy seats are small and uncomfortable as usual.

Flights on time. .Ride was as comfortable as can be expected in steerage. Luggage arrived at destination. Attendants were fairly friendly.

Great staff. Wifi is terrible. Signing up for skylines is a painstaking process. Had to call customer service just to get my flight itinerary and confirmation sent to me. Consistent delays. A well staffed company that is run so poorly. Upper management needs to be renewed.

The WiFi didn't seem as fast as it normally is

Bathrooms dirty sinks clogged. No one seemed to clean them. Plane very old

The gate was too far away for the connecting flight

They switched out gate from terminal 1 to terminal two ten minutes before boarding. So we had to make a 20 min crazy fast walk to a different terminal. Then we boarded the plane and waited for over 40 minutes until push back. Brutal

Compared with other carriers business class for an overnight was not worth the extra expense.

Seats were comfortable. It’s was so cold and very uncomfortable. I paid 2000 miles for wifi service that was choppy the whole flight. Would like to be reimbursed for my miles Food was so disappointing. Three cold and terrible meals for $3000 round trip. This needs to be better.

Generally good. The aisles have gotten narrower which can slow down boarding. Flight crew was great! Healthier complimentary snacks would be appreciated. Due to earthquake in San Francisco we had to circle in air space for a bit but then had a smooth landing. I laud the flight crew for their patience ;)

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

Excellent, professional, actually on time which is rare for late flights. Decent food. I love the new neck pillows! Nice, simple upgrade from the old ones I wasn't sure where to put. I wish they would allow more time for rest. It's a red eye 7 hour flight and meal service was about 3 hours.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Flight was cramped with every seat taken. The food was fine, nothing crazy to write home about. The plane felt dated and needing some TLC, the button for the window shade didn't work and there were no AC outlets to use. When communicating with staff all except one nice lady never seemed happy to help me almost like I was bothering them when asked for things like a glass of water or a snack. The flight was overall fine. It did what was needed which is get me from point A to point B. But it certainly was not special. I don't expect much in economy but I believe economy on a host of other airlines is more memorable and better experience.

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

The trip was very smooth and they provided great customer service

The plane was late and then sat on the runway for almost 45 minutes before taking off.

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

The flight was initially delayed, then cancelled. American Airlines says the cancellation was weather related, though the actual weather was not bad in both Washington and Providence and between. There were very few cancellations that day. In fact, AA2120 from Washington, DC to Boston flew with a minor delay at about the same time. So, the weather somehow affected only this particular flight AA5230. The next available flight was the following morning. The American Airlines refused to reimburse accommodation (hotel at DCA)

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

One bottle of water and a package of cookies for comfort plus. We had to literally beg a flight attendant for an extra bottle of water later in the flight due to feeling dehydrated.

Fine. On time, cabin service was fine, bag arrived. All good. Flying into DCA so did not collide with any helicopters, which is also good. Horrid incident that could have and should have been prevented.

Cabin was roomy enough to easily slide my carry on under the seat in front of me!

Good experience but the snacks are not gluten free, so I cannot eat them.

Standard. No different than a discount carrier on a short trip.

Everything you need to know for your flight from Dulles Intl to Simpson Bay

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